diff --git a/api/ble.py b/api/ble.py
index b5f8c62..f8b0992 100644
--- a/api/ble.py
+++ b/api/ble.py
@@ -292,7 +292,8 @@ def test(test_count = 0, bt_usb_id = None) -> None:
     passed_list = []
     # History buffer - keep the last N snapshots (N=5)
     print("Creating mac_history variable")
-    mac_history = []
+    from collections import deque
+    mac_history = deque(maxlen=5)
     print("Done")
     prev_list_snapshot = None
     print("Just before the loop")
@@ -306,13 +307,13 @@ def test(test_count = 0, bt_usb_id = None) -> None:
         else:
             # List changed - reset mac_history
             print("List changed - reset mac_history")
-            mac_history = []
+            mac_history.clear()
             mac_history.append(passed_list)
-        # if len(mac_history) == 5 and all(lst == mac_history[0] for lst in mac_history):
-        #     log.warning(f"Last 5 tests have been identical, resetting adapter")
-        #     reset_adapter()
-        #     mac_history = []
-        # prev_list_snapshot = current_list
+        if len(mac_history) == 5 and all(lst == mac_history[0] for lst in mac_history):
+            log.warning(f"Last 5 tests have been identical, resetting adapter")
+            reset_adapter()
+            mac_history.clear()
+        prev_list_snapshot = current_list
             
         log.info(f"  Test run: {test_count} - loop {test_loop_count} start. Initializing run...")
         test_run_results = sensor_data_query(test_list)